var xPos = parseInt(Math.random()*100);
var yPos = parseInt(Math.random()*100);
var img = document.getElementById('info');
img.style.marginLeft= xPos + 'px';
img.style.marginTop = yPos + 'px';
var step = 1;
var delay = 80;
var width,height,Hoffset,Woffset;
var y = 1;
var x = 1;
var interval;
function changePos(){
	width = document.documentElement.clientWidth;
	height = document.documentElement.clientHeight;
	Hoffset = img.offsetHeight;
	Woffset = img.offsetWidth;
	if (y){
		yPos = yPos + step;
	}else{
		yPos = yPos - step;
	}
	if (yPos < 0){
		y = 1;
		yPos = 0;
	}
	if (yPos >= (height - Hoffset)){
		y = 0;
		yPos = (height - Hoffset);
	}
	if (x){
		xPos = xPos + step;
	}else{
		xPos = xPos - step;
	}
	if (xPos < 0){
		x = 1;
		xPos = 0;
	}
	if (xPos >= (width - Woffset)){
		x = 0;
		xPos = (width - Woffset);
	}
	img.style.marginLeft = xPos + document.documentElement.scrollLeft+ 'px';
	img.style.marginTop = yPos + document.documentElement.scrollTop + 'px';
}
function start(){
	interval = setInterval('changePos()', delay);
}
img.onmouseover = function(){
	clearInterval(interval);			
}
img.onmouseout = function(){
	start();
}